Cutting tool



J. J. EYRE CUTTING 'rooL Oct. 4, 1932.

Filed Jan. 1.9. 1931 Patented Oct. 4, 1932 NUNITED.' STATES PATENT Y JOHN J. EYRE, or situe-Us, Massminusnfr'rs,.,Assrernon To n. n. nomina, INC., A

CORPORATION OF MASSACHUSETTS i c'U'rTiNe 1root Application mea January 19, 1931. seriai'no. 509,768.

rlhis invention aims to provide a strong quick-acting two-way?7 adjusting device for each `cuttingjaw,.and the invention further :aims to effect a reduction in the length and quantity of high grade steel used in the cute ting jaws thereby Vreducing replacement costs. f Y ,l i

In the accompanying drawing, wherein l have shown merely for illustrative purposes one embodiment of my invention,

Y Fig. 1 is a sideelevation of the cutting tool; Fig. 2 isa transverse section on line 2-2 of 1;

Fig. 3 is a section taken on line 3-3 ofV Fig. 1; j

Fig. 4 is a partial side elevationof a modi- 'fled form of adjusting section with parts broken away to save space; and

Fig. 5 is a detail section taken on line 5-5 of'Fig. 4. Y.

The particular embodiment of the invention selected for purposes of illustration and shown in the drawing comprises cutting j aws 1 pivotally connected together in cooperative '35 relation by means of links 2 and screws 3.

The rear end 4V of each cutting jaw 1 is pivotally connected by a screw 5 with an adjustinglink 6, the oppositeends of sald links beingfurther pivotally connectedy by screws 7 with their respective handle levers 8, which handle levers are further pivotally connected together by a stud 9. The said links 6 just described are connectedvwith their respective cutting jaws and handlelevers by means whereby said cutting jawsmay be adj usted relatively tore/ach other to compensate Vfor wear upon their-cutting edges. For convenience I have shown in this connection adjusting screws 10 so arranged relatively to 4 said cuttingjaws that rotation ofsaid adj usting screws in oneA direction will move the cutting edges toward each `other while rotation of said screws in opposite directions Vcauses said cutting edges to be moved away from each other, in other words providing a simple two-wayadjustment fory each cutting jaw.

To accomplish the foregoing result I preferably provide herein a lug 12 projecting lat- 0 erally from the outer face of each link 6 and VIn Figs-4 and 5 is illustrated a modified wo screw threaded at 14 to receive the adjusting screw 10. The screw threaded end 16 of the screw k10 `is arranged to engage the face 18 of the rear end- 4 of the outer edge of cutting jaw 1 (see Fig. 3). A yoke 20 is pivotally connected by a screw 22 with said rear end 4 of cutting jaws 1. The end'of the yoke I 20 opposite said pivot 22 is closedat 24, and this closed endis drilledconcavely or countersunk at 26 to receive a similarly fconveXly shaped flange 28 formed -upon said screw adjacent to the head 30 thereof which-herein projects through the hold 32 in the closedend of said yoke. The flange 28 is arranged to 'seat in said countersunk holeY of said yoke VThe flange 28 engaging the closed end of said yoke serves as one abutment and the end 16 of said screw engaging the surface` 18 serves as the other abutment for eifecting a change in the angular relation of said cutting jaw and link 6, upon rotation of said adjusting screw inone direction or the other,`due to the rotation of the squared head 30 ofvsaidl y screw, thus producing a quick two-way adj ustment for the cutting edges. l In the form 'shown in Figs. 1 and 3 the adjusting screw A10 is arrangedsubstantially parallel with its link 6 lying close against said link, thus providing avery compact adjusting device that is neat in'appearance and very powerful. In operation the screw 10 is rotated by kmeans of a wrench or tool `applied to the head 30 and moves said screw msi 14 longitudinally of the leg 12, whereupon j' the end 18 of the rear end 4 of the cutting jaw causes the link 6 to be rocked aboutv the axis of the screw 5 to change the angle of said surface 18 relatively to the link 6 and operating handle llever 8. By this means the angular relation of the operating lever V8 .A and the cutting jaw thereof is varied so that the cuttingedges of the cutting jaws Vwill come together more quicklyvor coincidently with the abutting of the stops 32V formed Yupon the inner edges of the handle levers 8.

ric

form of adjusting section which herein *coin-V Apivotally connected by a stud 38 with the tail 40 of its cutting jaw (not shown).4k The -adjusting section 34 is suit-ablyenl'arged at'V 42 and recessed to receive the legs of ayoke44. The yoke atits openlor inner end is connected by-a pinj46 with the anvil portion of Y the handle member 8, andz-roin said Vpin 46 Aber 8.v"Ihe1s'crew`.5O isprovidedwwiths'a iangedg part 54 which is arranged to lseat within a suitably shaped recess VV5,6 in `the I closed end l580i the yoke 44. The head 60 of the screw projects through the closed, end

58; of saidyoke and' is polygonal kin form for jeii'ectingjtlie rotationof the 'screw`50, which .rotation effects the in an'd out movement "of the adjusting section orlink 34, 'producing an angular movement thereof relativelyto ,the hand-le lev'er'8v and the consequent swing! jing movement ofthe' cutting j aw- Y 1 The legs of theyoke 44 in straddling the portionr48'fto connect with .the pin 46, pass i beneathl and; are concealed by flange-like eX- tensions of the enlargement`-42 `which overlap the ends of said-pivotgpin 'fand prevent said pin from workingout in eitherdirection.

' An outstandingadvantageof` the present tool over former bolt clippers and cutting V.tools is that the cuttingjaws which are essentially made fof high grade Vsteel have relatively shorterrear ends, hencematerially reducing the amount of said high grade steel A flaterally disposed'lug, an adjusting screw en- Vgagingsaid lugand the rear end of saidcutting jaw, and ayoke cooperatingwith the -rear endofsaijd Vcuttingjaw-and said screw c to` swing said adjustingv sectiongrelatively to In a cutting tool, incombination, andadjusting section, a cutting jaw and handle ar- `.rangeiil upon opposite ends of said'adj ustinfr sect-ion, an adjusting screwarrangedin said adjusting section outside the planepf the center line of the pivots unitingsaid adjustl ing section with .said cutting j aw andhandle, .Y said,adjusting. screw abutting'the vouteriufiost point in the tail end" of fsaidj cutting `jaw Vthereby veiserting maximum v'cuttingpres-.l

sure. v

Y 3. In a cutting tool, in combination, a cutting j aw, a handle'lever, an adjusting section arranged:approximately parallel with` the. [central longitudinal plane of said tool.

, 4. Inla` tool of theclass described, a pivotedjaw,ajpivotedhandle lever, a link interposed; between them and having a threaded the legs Vof said vyoke extends outwardlyA u straddling an integral portion 48 of thead-v justing section in which ascrew 50 is thread- 3, ed. The end of said screw 50 is arranged to lug receiving an. adjusting screw, an end'of which abuts one of the connected parts', and` a yokel carried-bysaid part embracing saidV lugy and providing a supporting bearing for the other end of thescrew.`vv

1 5. In a tool of the class described, 'a' piv-il j 'ot'ed jaw, av pivotedihandlelever,"a linkginter'posed between them and having a threaded lug Vprojecting laterally therefromV and re-A ceivi-ng. an `adjusting screw disposed sub1 stantially` parallel with said link, an endlof said screw abutting. .,one of the connected .partsto `swing thejsame vabout its pointof connection Ywith the linkk through a substantially transversely extending crankj arm, and

ayoke f carried by said part,` embracing 'said lufr and rovidin asul ortino bearfi-nfffor 'the other end of the-screw. j

Y 6. In a tool ofthe class described, a-piv-` Yoted jaw, a pivotedliandle lever, a link con;

necting said parts and pivoted to the jaw substantially at its rearmost end,`the rear end of the jaw extending substantially :laterally from vthe point ofpivotal connection-'to provide a crank arm/,'and'means interposed between such extension of the a'w and the link for relativelya'ngularly adjusting the same.

the'rpointof! pivotal connection to provide a crankrarim and; means disposed laterallyof` .the link and substantially parallel to the' same and received beneathl the overhang of such Vextensionror relatively angularly adjusting jaw andA linke Y 8.. Infa tooljot` classfdescribed, a pivoted jaw, a pivoted'handle lever, a link connecting saidV parts'and pivoted to the jaw `substantially lat, its 'rearmost end, the 1rear Y end of theA jaw extending:substantially lat- .,erally from the `pointof pivotal connection to provideacrank arm, said link having a proa icc jecting lug' Qpposingsaid extension, a screw` Y tension, and ayoke carried by said extension In testimony whereof,lI have signed lnaine to this spec-#,iication;V

threaded in 'fsaid lugv and abutting thereX- 

